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- Publisher Website: 10.1016/j.memsci.2020.118302
- Scopus: eid_2-s2.0-85087400549
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Article: Fabrication of Reactive Flat-Sheet Ceramic Membranes for Oxidative Degradation of Ofloxacin by Peroxymonosulfate
Title | Fabrication of Reactive Flat-Sheet Ceramic Membranes for Oxidative Degradation of Ofloxacin by Peroxymonosulfate |
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Authors | |
Keywords | Antibiotics Catalytic degradation Density functional theory Functionalized flat-sheet ceramic membrane Peroxymonosulfate |
Issue Date | 2020 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci |
Citation | Journal of Membrane Science, 2020, v. 611, p. article no. 118302 How to Cite? |
Abstract | A novel CoFe2O4-decorated flat-sheet ceramic membrane (CFCM) was prepared via a facile one-step hydrothermal method and utilized for peroxymonosulfate (PMS) activation in the catalytic degradation of ofloxacin (OFX) in a dead-end filtration mode. Several characterization methods confirmed the successful deposition of a CoFe2O4 layer on the surface of a pristine Al2O3 ceramic membrane. The CFCM possessed a considerably smaller average pore size (45 nm) and contact angle (20°) than a pristine Al2O3 flat-sheet ceramic membrane (80 nm and 50°) after modification. The catalytic degradation results revealed that nearly 100% removal of 40 μM OFX could be achieved within 20 min at pH 6.0, with 2 mM PMS and 100 kPa of transmembrane pressure (TMP). Moreover, the CFCM suffered little interference from co-existing SO42− and Cl− in the water matrix, but was significantly hindered by HCO 3− and humic acid. The low concentration of metal-leaching by CFCM will makes it reliable for catalytic degradation processes. Sulfate radicals were found to be the predominant reactive radicals that drove OFX degradation, and according to density functional theory (DFT) calculations they were generated via electron transfer from CoFe2O4 to chemisorbed PMS. © 2020 Elsevier B.V. |
Persistent Identifier | http://hdl.handle.net/10722/291222 |
ISSN | 2023 Impact Factor: 8.4 2023 SCImago Journal Rankings: 1.848 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | FAN, Y | - |
dc.contributor.author | Zhou, Y | - |
dc.contributor.author | Feng, Y | - |
dc.contributor.author | WANG, P | - |
dc.contributor.author | Li, X | - |
dc.contributor.author | Shih, K | - |
dc.date.accessioned | 2020-11-07T13:54:02Z | - |
dc.date.available | 2020-11-07T13:54:02Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Journal of Membrane Science, 2020, v. 611, p. article no. 118302 | - |
dc.identifier.issn | 0376-7388 | - |
dc.identifier.uri | http://hdl.handle.net/10722/291222 | - |
dc.description.abstract | A novel CoFe2O4-decorated flat-sheet ceramic membrane (CFCM) was prepared via a facile one-step hydrothermal method and utilized for peroxymonosulfate (PMS) activation in the catalytic degradation of ofloxacin (OFX) in a dead-end filtration mode. Several characterization methods confirmed the successful deposition of a CoFe2O4 layer on the surface of a pristine Al2O3 ceramic membrane. The CFCM possessed a considerably smaller average pore size (45 nm) and contact angle (20°) than a pristine Al2O3 flat-sheet ceramic membrane (80 nm and 50°) after modification. The catalytic degradation results revealed that nearly 100% removal of 40 μM OFX could be achieved within 20 min at pH 6.0, with 2 mM PMS and 100 kPa of transmembrane pressure (TMP). Moreover, the CFCM suffered little interference from co-existing SO42− and Cl− in the water matrix, but was significantly hindered by HCO 3− and humic acid. The low concentration of metal-leaching by CFCM will makes it reliable for catalytic degradation processes. Sulfate radicals were found to be the predominant reactive radicals that drove OFX degradation, and according to density functional theory (DFT) calculations they were generated via electron transfer from CoFe2O4 to chemisorbed PMS. © 2020 Elsevier B.V. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci | - |
dc.relation.ispartof | Journal of Membrane Science | - |
dc.subject | Antibiotics | - |
dc.subject | Catalytic degradation | - |
dc.subject | Density functional theory | - |
dc.subject | Functionalized flat-sheet ceramic membrane | - |
dc.subject | Peroxymonosulfate | - |
dc.title | Fabrication of Reactive Flat-Sheet Ceramic Membranes for Oxidative Degradation of Ofloxacin by Peroxymonosulfate | - |
dc.type | Article | - |
dc.identifier.email | Zhou, Y: yzhou223@hku.hk | - |
dc.identifier.email | Li, X: xlia@hkucc.hku.hk | - |
dc.identifier.email | Shih, K: kshih@hku.hk | - |
dc.identifier.authority | Li, X=rp00222 | - |
dc.identifier.authority | Shih, K=rp00167 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.memsci.2020.118302 | - |
dc.identifier.scopus | eid_2-s2.0-85087400549 | - |
dc.identifier.hkuros | 318676 | - |
dc.identifier.volume | 611 | - |
dc.identifier.spage | article no. 118302 | - |
dc.identifier.epage | article no. 118302 | - |
dc.identifier.isi | WOS:000560707700011 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0376-7388 | - |